Device for regulating the quality of carbureted vapor or gas



(No Model.)

B. J. FROST.

DEVICE FOR REGULATING THE QUALITY OF GARBURETED VAPOR 0R GAS.

No 881,619. Patented Apr. 24, 1888.

\ fi/ITN ESSES: V INVENTOR Q16 6% a. W

UNITED STATES.

PATEN tries.

EDWARD J. FROST, OF PHILADELPHIA, PENNSYLVANIA.

DEVICE FOR REGULATING THE QUALITY OF CARBURETED VAPOR OR GAS.

SPECIFICATION forming part of Letters Patent No. 381,619, dated April24, 1888.

Application filed August 1, 1887, Serial No. 3417741 (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD J. Fnosr, of Philadelphia, in the State ofPennsylvania, have invented certain new and useful Improvements inDevices for Regulating the Quality of (larbureted Vapor or Gas, whereofthe following is a specification, reference being had to theaccompanying drawing, which represents a vertical central sectionthrough the apparatus.

The object of my invention is to overcome the well-known difficultywhich attends the use of carbureters for making illuminatingvapor, andwhich is due to the fact that the saturation of the air-current variesgreatly, so that the flame thereof is at times smoky from excess ofhydrocarbon. I have found that a very sensible increase of weightattends such over-saturation of the current, and hence have utilizedthis feature for automatically controlling a dilution of the maincurrent by a secondary air-blast, admitted thereto after the current hasbeen charged with hydrocarbon vapor.

In the accompanying drawing, A and B represent two cylindrical closedvessels mounted upon a suitable base and communicating with each otherat top by a'horizontal passage, B. An annularperforated pipe, 0, extendsaround the lower portion of the vvessel A, and is provided with anexternal coupling, 0, to which the exit-pipe of the carburetor (notshown) is to be attached. The carbureter may be of any of the well-knowntypes; but I prefer to use the device specified in my Letters Patent No.278,529, dated May 29, 1883. \Vithin the annular pipe 0 is a smallerperforated pipe, (I, communicating with an exterior air-blast pipe, D.This pipe D is in communication with the main air-blast supply of thecarbureter, and is provided with a' normally-closed puppetvalve, 0,whose stem N rests upon the surface of a flexible diaphragm or ancroid,M, mounted upon the top of the passage R, but isolated from the interiorthereof. A pipe, L, leads from the pipe D (at a point not under thecontrol of valve 0) to a valve-chamber, T, mounted upon the top of thevessel B. From this valvechamber T (whose valves will presently bedescribed) a pipe, P, leads to the interior of the space beneath thediaphragm lVI.

top of the vessel 13 and into the chamber T.

This stem I is provided with two puppetvalves, a and 21, facing inopposite directions within said chamber, and so arranged that when oneis upon its seat the other is open. When the valve a is open,communication is established between the pipes L and P, and consequentlythe full pressure of the air-blast in the pipe D is transmitted to theunder side of the diaphragm M. When, however, the valve a is closed, thevalve 1) is open and the pipe P then communicates with the enlargedupper portion, K, of the chamber T, which is open to the outside air.The stem I terminates in a cup, J, in which shot, &c., may be placed toobtain acounter-balance of the utmost nicety.

At the bottom of the vessel B is a couplingpipe, S, which leads to theburners.

The operation of the device is as follows: The normal quality of vaporhaving been determined, the counter-weight upon the arm F is so adjustedthat when the vapor is passing through the vessels A and B on its way tothe burners the weight of the globe E shall just suffice to hold thevalve a up against its seat. If, however, the vapor-current becomes toohighly saturated, the increase of density floats the globe E upward, andby depressing the arm F opens the valve a. This admits the air-currentfrom pipe D beneath the diaphragm M and distends it, raising the stern Nand opening the valve 0. The air-current then passes down through thecontinuation of the pipe D and enters the annular pipe d, issuingthrough the perforations thereof and mingling with the arrivingvapor-current in the annular pipe 0, so as to dilute it. consequentreduction of density causes the globe E to sink, and when the normalpoint has been reached its descent closes the valve a, opening at thesame time the valve 1), which permits the escape of the air underpressure from beneath the diaphragm M. This diaphragm then falls andpermits the valve 0 to close, cutting off the diluting air-current. Asthese movements are gradual and the balance of great delicacy, theautomatic regulation of quality is Very minute and effectual.

Having thus described myinvention, Iclaim, in a regulating device forcarburetors having the usual air-supply, the following combinations ofparts interposed between the carburetor and the burners:

1. The combination of an inclosing recep tacle into which both thevapor-pipe and airblast pipe lead,abalance-beam, a float mounted uponone arm thereof, a valve-operating device actuated by the other armthereof, and a valve operated by said device and controlling 1the saidair-blast pipe, substantially as set orth.

2. The combination of the vessels A and B, communicating as described,the balanoe-beam and float arranged therein, the perforated 2o pipes cand d, the former communicating with the vapor-pipe, the lattercommunicating with the air-blast pipe, the double valve (1 b, actuatedby the balancebeam, the aneroid whose inlet and outlet are controlled bysaid double 2 3 valve, as described, and the valve 0, actuv ated by saidaneroid and controlling the airinlet of the pipe d, substantially as setforth.

EDWARD J. FROST.

\Vitnesses:

T. SABY, A. E. PAIGE.

